Just say no to macerator pumps They place a large number of restrictions on what you can do with them (toilet paper only in the pan, no hairs down the sink, no cleaners), and then even when obeying all the instructions they fail to work, and when they fail to work you end up with a ton of waste soaking into your floor. This time spectacularly flooding (and ruining) the bathroom and hall floors and coming within inches of flooding the cupboard where my large UPS sits (stupidly) on the floor. A very large wet battery and invertor - that would have been a spectacular bang. So that put an end to the balun and S/PDIF (I got the acronym right this time) through CAT5 idea needing 3-400 pounds to fix the damages, and tommorrow a trip to the DIY store to buy some wood to raise the UPS by four inches or so and maybe some water sensor alarms, and possibly a bucket - low tech toilet, but at least it would work.